Release 4.7 drivers/staging/iio/adc/ad7606_ring.c
/*
* Copyright 2011-2012 Analog Devices Inc.
*
* Licensed under the GPL-2.
*
*/
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include "ad7606.h"
/**
* ad7606_trigger_handler_th() th/bh of trigger launched polling to ring buffer
*
**/
static irqreturn_t ad7606_trigger_handler_th_bh(int irq, void *p)
{
struct iio_poll_func *pf = p;
struct ad7606_state *st = iio_priv(pf->indio_dev);
gpio_set_value(st->pdata->gpio_convst, 1);
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 25 | 54.35% | 3 | 60.00% |
| jonathan cameron | jonathan cameron | 21 | 45.65% | 2 | 40.00% |
| Total | 46 | 100.00% | 5 | 100.00% |
/**
* ad7606_poll_bh_to_ring() bh of trigger launched polling to ring buffer
* @work_s: the work struct through which this was scheduled
*
* Currently there is no option in this driver to disable the saving of
* timestamps within the ring.
* I think the one copy of this at a time was to avoid problems if the
* trigger was set far too high and the reads then locked up the computer.
**/
static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
{
struct ad7606_state *st = container_of(work_s, struct ad7606_state,
poll_work);
struct iio_dev *indio_dev = iio_priv_to_dev(st);
__u8 *buf;
int ret;
buf = kzalloc(indio_dev->scan_bytes, GFP_KERNEL);
if (!buf)
return;
if (gpio_is_valid(st->pdata->gpio_frstdata)) {
ret = st->bops->read_block(st->dev, 1, buf);
if (ret)
goto done;
if (!gpio_get_value(st->pdata->gpio_frstdata)) {
/* This should never happen. However
* some signal glitch caused by bad PCB desgin or
* electrostatic discharge, could cause an extra read
* or clock. This allows recovery.
*/
ad7606_reset(st);
goto done;
}
ret = st->bops->read_block(st->dev,
st->chip_info->num_channels - 1, buf + 2);
if (ret)
goto done;
} else {
ret = st->bops->read_block(st->dev,
st->chip_info->num_channels, buf);
if (ret)
goto done;
}
iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
done:
gpio_set_value(st->pdata->gpio_convst, 0);
iio_trigger_notify_done(indio_dev->trig);
kfree(buf);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 204 | 93.58% | 3 | 37.50% |
| jonathan cameron | jonathan cameron | 9 | 4.13% | 3 | 37.50% |
| lars-peter clausen | lars-peter clausen | 4 | 1.83% | 1 | 12.50% |
| cristina opriceana | cristina opriceana | 1 | 0.46% | 1 | 12.50% |
| Total | 218 | 100.00% | 8 | 100.00% |
int ad7606_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
struct ad7606_state *st = iio_priv(indio_dev);
INIT_WORK(&st->poll_work, &ad7606_poll_bh_to_ring);
return iio_triggered_buffer_setup(indio_dev,
&ad7606_trigger_handler_th_bh, &ad7606_trigger_handler_th_bh,
NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 36 | 80.00% | 2 | 66.67% |
| lars-peter clausen | lars-peter clausen | 9 | 20.00% | 1 | 33.33% |
| Total | 45 | 100.00% | 3 | 100.00% |
void ad7606_ring_cleanup(struct iio_dev *indio_dev)
{
iio_triggered_buffer_cleanup(indio_dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 12 | 80.00% | 1 | 33.33% |
| jonathan cameron | jonathan cameron | 2 | 13.33% | 1 | 33.33% |
| lars-peter clausen | lars-peter clausen | 1 | 6.67% | 1 | 33.33% |
| Total | 15 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 306 | 85.71% | 5 | 35.71% |
| jonathan cameron | jonathan cameron | 34 | 9.52% | 6 | 42.86% |
| lars-peter clausen | lars-peter clausen | 16 | 4.48% | 2 | 14.29% |
| cristina opriceana | cristina opriceana | 1 | 0.28% | 1 | 7.14% |
| Total | 357 | 100.00% | 14 | 100.00% |
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